forked from mirrors/gecko-dev
3f7472aec1
This method is not a virtual call, and also looks nicer. This patch was mostly generated by a Python script, but I manually cleaned up the code in a few places where statements didn't need to be split across multiple lines any more. MozReview-Commit-ID: 8JExxqSRc59 --HG-- extra : rebase_source : df6330a89e8d65dfe7a6fda0c8cb9f9732302efc
1071 lines
32 KiB
C++
1071 lines
32 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Main header first:
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#include "SVGObserverUtils.h"
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// Keep others in (case-insensitive) order:
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#include "mozilla/RestyleManager.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsISupportsImpl.h"
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#include "nsSVGClipPathFrame.h"
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#include "nsSVGPaintServerFrame.h"
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#include "nsSVGFilterFrame.h"
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#include "nsSVGMaskFrame.h"
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#include "nsIReflowCallback.h"
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#include "nsCycleCollectionParticipant.h"
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#include "SVGGeometryElement.h"
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#include "SVGUseElement.h"
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#include "ImageLoader.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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void
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nsSVGRenderingObserver::StartObserving()
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{
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Element* target = GetTarget();
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if (target) {
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target->AddMutationObserver(this);
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}
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}
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void
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nsSVGRenderingObserver::StopObserving()
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{
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Element* target = GetTarget();
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if (target) {
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target->RemoveMutationObserver(this);
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if (mInObserverList) {
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SVGObserverUtils::RemoveRenderingObserver(target, this);
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mInObserverList = false;
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}
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}
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NS_ASSERTION(!mInObserverList, "still in an observer list?");
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}
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static nsSVGRenderingObserverList *
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GetObserverList(Element *aElement)
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{
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return static_cast<nsSVGRenderingObserverList*>
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(aElement->GetProperty(nsGkAtoms::renderingobserverlist));
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}
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Element*
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nsSVGRenderingObserver::GetReferencedElement()
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{
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Element* target = GetTarget();
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#ifdef DEBUG
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if (target) {
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nsSVGRenderingObserverList *observerList = GetObserverList(target);
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bool inObserverList = observerList && observerList->Contains(this);
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NS_ASSERTION(inObserverList == mInObserverList, "failed to track whether we're in our referenced element's observer list!");
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} else {
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NS_ASSERTION(!mInObserverList, "In whose observer list are we, then?");
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}
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#endif
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if (target && !mInObserverList) {
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SVGObserverUtils::AddRenderingObserver(target, this);
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mInObserverList = true;
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}
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return target;
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}
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nsIFrame*
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nsSVGRenderingObserver::GetReferencedFrame()
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{
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Element* referencedElement = GetReferencedElement();
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return referencedElement ? referencedElement->GetPrimaryFrame() : nullptr;
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}
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nsIFrame*
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nsSVGRenderingObserver::GetReferencedFrame(LayoutFrameType aFrameType,
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bool* aOK)
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{
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nsIFrame* frame = GetReferencedFrame();
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if (frame) {
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if (frame->Type() == aFrameType)
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return frame;
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if (aOK) {
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*aOK = false;
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}
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}
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return nullptr;
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}
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void
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nsSVGRenderingObserver::OnNonDOMMutationRenderingChange()
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{
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mInObserverList = false;
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OnRenderingChange();
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}
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void
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nsSVGRenderingObserver::NotifyEvictedFromRenderingObserverList()
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{
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mInObserverList = false; // We've been removed from rendering-obs. list.
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StopObserving(); // Remove ourselves from mutation-obs. list.
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}
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void
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nsSVGRenderingObserver::AttributeChanged(dom::Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue)
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{
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// An attribute belonging to the element that we are observing *or one of its
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// descendants* has changed.
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//
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// In the case of observing a gradient element, say, we want to know if any
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// of its 'stop' element children change, but we don't actually want to do
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// anything for changes to SMIL element children, for example. Maybe it's not
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// worth having logic to optimize for that, but in most cases it could be a
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// small check?
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//
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// XXXjwatt: do we really want to blindly break the link between our
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// observers and ourselves for all attribute changes? For non-ID changes
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// surely that is unnecessary.
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OnRenderingChange();
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}
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void
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nsSVGRenderingObserver::ContentAppended(nsIContent* aFirstNewContent)
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{
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OnRenderingChange();
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}
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void
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nsSVGRenderingObserver::ContentInserted(nsIContent* aChild)
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{
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OnRenderingChange();
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}
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void
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nsSVGRenderingObserver::ContentRemoved(nsIContent* aChild,
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nsIContent* aPreviousSibling)
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{
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OnRenderingChange();
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}
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/**
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* Note that in the current setup there are two separate observer lists.
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*
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* In nsSVGIDRenderingObserver's ctor, the new object adds itself to the
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* mutation observer list maintained by the referenced element. In this way the
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* nsSVGIDRenderingObserver is notified if there are any attribute or content
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* tree changes to the element or any of its *descendants*.
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*
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* In nsSVGIDRenderingObserver::GetReferencedElement() the
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* nsSVGIDRenderingObserver object also adds itself to an
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* nsSVGRenderingObserverList object belonging to the referenced
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* element.
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*
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* XXX: it would be nice to have a clear and concise executive summary of the
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* benefits/necessity of maintaining a second observer list.
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*/
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nsSVGIDRenderingObserver::nsSVGIDRenderingObserver(nsIURI* aURI,
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nsIContent* aObservingContent,
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bool aReferenceImage)
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: mObservedElementTracker(this)
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{
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// Start watching the target element
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mObservedElementTracker.Reset(aObservingContent, aURI, true, aReferenceImage);
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StartObserving();
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}
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nsSVGIDRenderingObserver::~nsSVGIDRenderingObserver()
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{
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StopObserving();
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}
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void
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nsSVGIDRenderingObserver::OnRenderingChange()
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{
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if (mObservedElementTracker.get() && mInObserverList) {
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SVGObserverUtils::RemoveRenderingObserver(mObservedElementTracker.get(), this);
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mInObserverList = false;
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}
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}
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void
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nsSVGFrameReferenceFromProperty::Detach()
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{
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mFrame = nullptr;
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mFramePresShell = nullptr;
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}
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nsIFrame*
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nsSVGFrameReferenceFromProperty::Get()
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{
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if (mFramePresShell && mFramePresShell->IsDestroying()) {
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// mFrame is no longer valid.
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Detach();
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}
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return mFrame;
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}
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NS_IMPL_ISUPPORTS(nsSVGRenderingObserverProperty, nsIMutationObserver)
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void
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nsSVGRenderingObserverProperty::OnRenderingChange()
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{
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nsSVGIDRenderingObserver::OnRenderingChange();
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nsIFrame* frame = mFrameReference.Get();
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if (frame && frame->HasAllStateBits(NS_FRAME_SVG_LAYOUT)) {
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// Changes should propagate out to things that might be observing
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// the referencing frame or its ancestors.
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nsLayoutUtils::PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0),
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nsChangeHint_InvalidateRenderingObservers);
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}
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}
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsSVGFilterReference)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mObservedElementTracker)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsSVGFilterReference)
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tmp->StopObserving();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mObservedElementTracker);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGFilterReference)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsSVGIDRenderingObserver)
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NS_INTERFACE_MAP_ENTRY(nsIMutationObserver)
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NS_INTERFACE_MAP_ENTRY(nsISVGFilterReference)
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NS_INTERFACE_MAP_END
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nsSVGFilterFrame *
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nsSVGFilterReference::GetFilterFrame()
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{
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return static_cast<nsSVGFilterFrame*>(
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GetReferencedFrame(LayoutFrameType::SVGFilter, nullptr));
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}
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void
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nsSVGFilterReference::OnRenderingChange()
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{
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nsSVGIDRenderingObserver::OnRenderingChange();
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if (mFilterChainObserver) {
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mFilterChainObserver->Invalidate();
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}
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}
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsSVGFilterChainObserver)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mReferences)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsSVGFilterChainObserver)
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tmp->DetachReferences();
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mReferences);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGFilterChainObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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nsSVGFilterChainObserver::nsSVGFilterChainObserver(const nsTArray<nsStyleFilter>& aFilters,
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nsIContent* aFilteredElement,
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nsIFrame* aFilteredFrame)
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{
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for (uint32_t i = 0; i < aFilters.Length(); i++) {
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if (aFilters[i].GetType() != NS_STYLE_FILTER_URL)
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continue;
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// aFilteredFrame can be null if this filter belongs to a
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// CanvasRenderingContext2D.
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nsCOMPtr<nsIURI> filterURL = aFilteredFrame
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? SVGObserverUtils::GetFilterURI(aFilteredFrame, i)
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: aFilters[i].GetURL()->ResolveLocalRef(aFilteredElement);
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RefPtr<nsSVGFilterReference> reference =
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new nsSVGFilterReference(filterURL, aFilteredElement, this);
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mReferences.AppendElement(reference);
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}
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}
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nsSVGFilterChainObserver::~nsSVGFilterChainObserver()
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{
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DetachReferences();
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}
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bool
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nsSVGFilterChainObserver::ReferencesValidResources()
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{
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for (uint32_t i = 0; i < mReferences.Length(); i++) {
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if (!mReferences[i]->ReferencesValidResource())
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return false;
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}
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return true;
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}
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bool
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nsSVGFilterChainObserver::IsInObserverLists() const
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{
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for (uint32_t i = 0; i < mReferences.Length(); i++) {
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if (!mReferences[i]->IsInObserverList())
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return false;
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}
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return true;
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}
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void
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nsSVGFilterProperty::OnRenderingChange()
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{
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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// Repaint asynchronously in case the filter frame is being torn down
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nsChangeHint changeHint =
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nsChangeHint(nsChangeHint_RepaintFrame);
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// Since we don't call nsSVGRenderingObserverProperty::
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// OnRenderingChange, we have to add this bit ourselves.
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if (frame->HasAllStateBits(NS_FRAME_SVG_LAYOUT)) {
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// Changes should propagate out to things that might be observing
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// the referencing frame or its ancestors.
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changeHint |= nsChangeHint_InvalidateRenderingObservers;
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}
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// Don't need to request UpdateOverflow if we're being reflowed.
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if (!(frame->GetStateBits() & NS_FRAME_IN_REFLOW)) {
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changeHint |= nsChangeHint_UpdateOverflow;
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}
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0), changeHint);
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}
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void
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nsSVGMarkerProperty::OnRenderingChange()
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{
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nsSVGRenderingObserverProperty::OnRenderingChange();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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NS_ASSERTION(frame->IsFrameOfType(nsIFrame::eSVG), "SVG frame expected");
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// Don't need to request ReflowFrame if we're being reflowed.
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if (!(frame->GetStateBits() & NS_FRAME_IN_REFLOW)) {
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// XXXjwatt: We need to unify SVG into standard reflow so we can just use
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// nsChangeHint_NeedReflow | nsChangeHint_NeedDirtyReflow here.
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// XXXSDL KILL THIS!!!
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nsSVGUtils::ScheduleReflowSVG(frame);
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}
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0),
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nsChangeHint_RepaintFrame);
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}
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NS_IMPL_ISUPPORTS(nsSVGMaskProperty, nsISupports)
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nsSVGMaskProperty::nsSVGMaskProperty(nsIFrame* aFrame)
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: mFrame(aFrame)
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{
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const nsStyleSVGReset *svgReset = aFrame->StyleSVGReset();
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for (uint32_t i = 0; i < svgReset->mMask.mImageCount; i++) {
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nsCOMPtr<nsIURI> maskUri = SVGObserverUtils::GetMaskURI(aFrame, i);
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bool hasRef = false;
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if (maskUri) {
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maskUri->GetHasRef(&hasRef);
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}
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// Accrording to maskUri, nsSVGPaintingProperty's ctor may trigger an
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// external SVG resource download, so we should pass maskUri in only if
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// maskUri has a chance pointing to an SVG mask resource.
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//
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// And, an URL may refer to an SVG mask resource if it consists of
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// a fragment.
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nsSVGPaintingProperty* prop =
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new nsSVGPaintingProperty(hasRef ? maskUri.get() : nullptr,
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aFrame, false);
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mProperties.AppendElement(prop);
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}
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}
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void
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nsSVGMaskProperty::ResolveImage(uint32_t aIndex)
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{
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const nsStyleSVGReset* svgReset = mFrame->StyleSVGReset();
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MOZ_ASSERT(aIndex < svgReset->mMask.mImageCount);
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nsStyleImage& image =
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const_cast<nsStyleImage&>(svgReset->mMask.mLayers[aIndex].mImage);
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if (!image.IsResolved()) {
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MOZ_ASSERT(image.GetType() == nsStyleImageType::eStyleImageType_Image);
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image.ResolveImage(mFrame->PresContext(), nullptr);
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mozilla::css::ImageLoader* imageLoader =
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mFrame->PresContext()->Document()->StyleImageLoader();
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if (imgRequestProxy* req = image.GetImageData()) {
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imageLoader->AssociateRequestToFrame(req, mFrame, 0);
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}
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}
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}
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bool
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nsSVGTextPathProperty::TargetIsValid()
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{
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Element* target = GetTarget();
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return target && target->IsSVGElement(nsGkAtoms::path);
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}
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void
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nsSVGTextPathProperty::OnRenderingChange()
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{
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nsSVGRenderingObserverProperty::OnRenderingChange();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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NS_ASSERTION(frame->IsFrameOfType(nsIFrame::eSVG) ||
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nsSVGUtils::IsInSVGTextSubtree(frame),
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"SVG frame expected");
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// Avoid getting into an infinite loop of reflows if the <textPath> is
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// pointing to one of its ancestors. TargetIsValid returns true iff
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// the target element is a <path> element, and we would not have this
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// nsSVGTextPathProperty if this <textPath> were a descendant of the
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// target <path>.
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//
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// Note that we still have to post the restyle event when we
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// change from being valid to invalid, so that mPositions on the
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// SVGTextFrame gets updated, skipping the <textPath>, ensuring
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// that nothing gets painted for that element.
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bool nowValid = TargetIsValid();
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if (!mValid && !nowValid) {
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// Just return if we were previously invalid, and are still invalid.
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return;
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}
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mValid = nowValid;
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// Repaint asynchronously in case the path frame is being torn down
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nsChangeHint changeHint =
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nsChangeHint(nsChangeHint_RepaintFrame | nsChangeHint_UpdateTextPath);
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frame->PresContext()->RestyleManager()->PostRestyleEvent(
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frame->GetContent()->AsElement(), nsRestyleHint(0), changeHint);
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}
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static void
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InvalidateAllContinuations(nsIFrame* aFrame)
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{
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for (nsIFrame* f = aFrame; f;
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f = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(f)) {
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f->InvalidateFrame();
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}
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}
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void
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nsSVGPaintingProperty::OnRenderingChange()
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{
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nsSVGRenderingObserverProperty::OnRenderingChange();
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nsIFrame* frame = mFrameReference.Get();
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if (!frame)
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return;
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if (frame->GetStateBits() & NS_FRAME_SVG_LAYOUT) {
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frame->InvalidateFrameSubtree();
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} else {
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InvalidateAllContinuations(frame);
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}
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}
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static nsSVGFilterProperty*
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GetOrCreateFilterProperty(nsIFrame* aFrame)
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{
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const nsStyleEffects* effects = aFrame->StyleEffects();
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if (!effects->HasFilters())
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return nullptr;
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nsSVGFilterProperty *prop =
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aFrame->GetProperty(SVGObserverUtils::FilterProperty());
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if (prop)
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return prop;
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prop = new nsSVGFilterProperty(effects->mFilters, aFrame);
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NS_ADDREF(prop);
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aFrame->SetProperty(SVGObserverUtils::FilterProperty(), prop);
|
|
return prop;
|
|
}
|
|
|
|
static nsSVGMaskProperty*
|
|
GetOrCreateMaskProperty(nsIFrame* aFrame)
|
|
{
|
|
nsSVGMaskProperty *prop =
|
|
aFrame->GetProperty(SVGObserverUtils::MaskProperty());
|
|
if (prop)
|
|
return prop;
|
|
|
|
prop = new nsSVGMaskProperty(aFrame);
|
|
NS_ADDREF(prop);
|
|
aFrame->SetProperty(SVGObserverUtils::MaskProperty(), prop);
|
|
return prop;
|
|
}
|
|
|
|
template<class T>
|
|
static T*
|
|
GetEffectProperty(nsIURI* aURI, nsIFrame* aFrame,
|
|
const mozilla::FramePropertyDescriptor<T>* aProperty)
|
|
{
|
|
if (!aURI)
|
|
return nullptr;
|
|
|
|
T* prop = aFrame->GetProperty(aProperty);
|
|
if (prop)
|
|
return prop;
|
|
prop = new T(aURI, aFrame, false);
|
|
NS_ADDREF(prop);
|
|
aFrame->SetProperty(aProperty, prop);
|
|
return prop;
|
|
}
|
|
|
|
nsSVGMarkerProperty*
|
|
SVGObserverUtils::GetMarkerProperty(nsIURI* aURI, nsIFrame* aFrame,
|
|
const mozilla::FramePropertyDescriptor<nsSVGMarkerProperty>* aProperty)
|
|
{
|
|
MOZ_ASSERT(aFrame->IsSVGGeometryFrame() &&
|
|
static_cast<SVGGeometryElement*>(aFrame->GetContent())->IsMarkable(),
|
|
"Bad frame");
|
|
return GetEffectProperty(aURI, aFrame, aProperty);
|
|
}
|
|
|
|
nsSVGTextPathProperty*
|
|
SVGObserverUtils::GetTextPathProperty(nsIURI* aURI, nsIFrame* aFrame,
|
|
const mozilla::FramePropertyDescriptor<nsSVGTextPathProperty>* aProperty)
|
|
{
|
|
return GetEffectProperty(aURI, aFrame, aProperty);
|
|
}
|
|
|
|
nsSVGPaintingProperty*
|
|
SVGObserverUtils::GetPaintingProperty(nsIURI* aURI, nsIFrame* aFrame,
|
|
const mozilla::FramePropertyDescriptor<nsSVGPaintingProperty>* aProperty)
|
|
{
|
|
return GetEffectProperty(aURI, aFrame, aProperty);
|
|
}
|
|
|
|
nsSVGPaintingProperty*
|
|
SVGObserverUtils::GetPaintingPropertyForURI(nsIURI* aURI, nsIFrame* aFrame,
|
|
URIObserverHashtablePropertyDescriptor aProperty)
|
|
{
|
|
if (!aURI)
|
|
return nullptr;
|
|
|
|
SVGObserverUtils::URIObserverHashtable *hashtable =
|
|
aFrame->GetProperty(aProperty);
|
|
if (!hashtable) {
|
|
hashtable = new SVGObserverUtils::URIObserverHashtable();
|
|
aFrame->SetProperty(aProperty, hashtable);
|
|
}
|
|
nsSVGPaintingProperty* prop =
|
|
static_cast<nsSVGPaintingProperty*>(hashtable->GetWeak(aURI));
|
|
if (!prop) {
|
|
bool watchImage = aProperty == SVGObserverUtils::BackgroundImageProperty();
|
|
prop = new nsSVGPaintingProperty(aURI, aFrame, watchImage);
|
|
hashtable->Put(aURI, prop);
|
|
}
|
|
return prop;
|
|
}
|
|
|
|
SVGObserverUtils::EffectProperties
|
|
SVGObserverUtils::GetEffectProperties(nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame should be first continuation");
|
|
|
|
EffectProperties result;
|
|
const nsStyleSVGReset *style = aFrame->StyleSVGReset();
|
|
|
|
result.mFilter = GetOrCreateFilterProperty(aFrame);
|
|
|
|
if (style->mClipPath.GetType() == StyleShapeSourceType::URL) {
|
|
nsCOMPtr<nsIURI> pathURI = SVGObserverUtils::GetClipPathURI(aFrame);
|
|
result.mClipPath =
|
|
GetPaintingProperty(pathURI, aFrame, ClipPathProperty());
|
|
} else {
|
|
result.mClipPath = nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(style->mMask.mImageCount > 0);
|
|
result.mMask = style->HasMask()
|
|
? GetOrCreateMaskProperty(aFrame) : nullptr;
|
|
|
|
return result;
|
|
}
|
|
|
|
nsSVGPaintServerFrame *
|
|
SVGObserverUtils::GetPaintServer(nsIFrame* aTargetFrame,
|
|
nsStyleSVGPaint nsStyleSVG::* aPaint,
|
|
PaintingPropertyDescriptor aType)
|
|
{
|
|
// If we're looking at a frame within SVG text, then we need to look up
|
|
// to find the right frame to get the painting property off. We should at
|
|
// least look up past a text frame, and if the text frame's parent is the
|
|
// anonymous block frame, then we look up to its parent (the SVGTextFrame).
|
|
nsIFrame* frame = aTargetFrame;
|
|
if (frame->GetContent()->IsText()) {
|
|
frame = frame->GetParent();
|
|
nsIFrame* grandparent = frame->GetParent();
|
|
if (grandparent && grandparent->IsSVGTextFrame()) {
|
|
frame = grandparent;
|
|
}
|
|
}
|
|
|
|
const nsStyleSVG* svgStyle = frame->StyleSVG();
|
|
if ((svgStyle->*aPaint).Type() != eStyleSVGPaintType_Server)
|
|
return nullptr;
|
|
|
|
nsCOMPtr<nsIURI> paintServerURL =
|
|
SVGObserverUtils::GetPaintURI(frame, aPaint);
|
|
nsSVGPaintingProperty *property =
|
|
SVGObserverUtils::GetPaintingProperty(paintServerURL, frame, aType);
|
|
if (!property)
|
|
return nullptr;
|
|
nsIFrame* result = property->GetReferencedFrame();
|
|
if (!result)
|
|
return nullptr;
|
|
|
|
LayoutFrameType type = result->Type();
|
|
if (type != LayoutFrameType::SVGLinearGradient &&
|
|
type != LayoutFrameType::SVGRadialGradient &&
|
|
type != LayoutFrameType::SVGPattern)
|
|
return nullptr;
|
|
|
|
return static_cast<nsSVGPaintServerFrame*>(result);
|
|
}
|
|
|
|
nsSVGClipPathFrame *
|
|
SVGObserverUtils::EffectProperties::GetClipPathFrame()
|
|
{
|
|
if (!mClipPath)
|
|
return nullptr;
|
|
|
|
nsSVGClipPathFrame* frame = static_cast<nsSVGClipPathFrame*>(
|
|
mClipPath->GetReferencedFrame(LayoutFrameType::SVGClipPath, nullptr));
|
|
|
|
return frame;
|
|
}
|
|
|
|
nsTArray<nsSVGMaskFrame *>
|
|
SVGObserverUtils::EffectProperties::GetMaskFrames()
|
|
{
|
|
nsTArray<nsSVGMaskFrame *> result;
|
|
if (!mMask)
|
|
return result;
|
|
|
|
bool ok = true;
|
|
const nsTArray<RefPtr<nsSVGPaintingProperty>>& props = mMask->GetProps();
|
|
for (size_t i = 0; i < props.Length(); i++) {
|
|
nsSVGMaskFrame* maskFrame = static_cast<nsSVGMaskFrame*>(
|
|
props[i]->GetReferencedFrame(LayoutFrameType::SVGMask, &ok));
|
|
MOZ_ASSERT(!maskFrame || ok);
|
|
if (!ok) {
|
|
// We can not find the specific SVG mask resource in the downloaded SVG
|
|
// document. There are two possibilities:
|
|
// 1. The given resource id is invalid.
|
|
// 2. The given resource id refers to a viewbox.
|
|
//
|
|
// Hand it over to the style image.
|
|
mMask->ResolveImage(i);
|
|
}
|
|
result.AppendElement(maskFrame);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
SVGObserverUtils::EffectProperties::HasNoOrValidEffects()
|
|
{
|
|
return HasNoOrValidClipPath() && HasNoOrValidMask() && HasNoOrValidFilter();
|
|
}
|
|
|
|
bool
|
|
SVGObserverUtils::EffectProperties::HasNoOrValidClipPath()
|
|
{
|
|
if (mClipPath) {
|
|
bool ok = true;
|
|
nsSVGClipPathFrame* frame = static_cast<nsSVGClipPathFrame*>(
|
|
mClipPath->GetReferencedFrame(LayoutFrameType::SVGClipPath, &ok));
|
|
if (!ok || (frame && !frame->IsValid())) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
SVGObserverUtils::EffectProperties::HasNoOrValidMask()
|
|
{
|
|
if (mMask) {
|
|
bool ok = true;
|
|
const nsTArray<RefPtr<nsSVGPaintingProperty>>& props = mMask->GetProps();
|
|
for (size_t i = 0; i < props.Length(); i++) {
|
|
props[i]->GetReferencedFrame(LayoutFrameType::SVGMask, &ok);
|
|
if (!ok) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::UpdateEffects(nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(aFrame->GetContent()->IsElement(),
|
|
"aFrame's content should be an element");
|
|
|
|
aFrame->DeleteProperty(FilterProperty());
|
|
aFrame->DeleteProperty(MaskProperty());
|
|
aFrame->DeleteProperty(ClipPathProperty());
|
|
aFrame->DeleteProperty(MarkerBeginProperty());
|
|
aFrame->DeleteProperty(MarkerMiddleProperty());
|
|
aFrame->DeleteProperty(MarkerEndProperty());
|
|
aFrame->DeleteProperty(FillProperty());
|
|
aFrame->DeleteProperty(StrokeProperty());
|
|
aFrame->DeleteProperty(BackgroundImageProperty());
|
|
|
|
// Ensure that the filter is repainted correctly
|
|
// We can't do that in OnRenderingChange as the referenced frame may
|
|
// not be valid
|
|
GetOrCreateFilterProperty(aFrame);
|
|
|
|
if (aFrame->IsSVGGeometryFrame() &&
|
|
static_cast<SVGGeometryElement*>(aFrame->GetContent())->IsMarkable()) {
|
|
// Set marker properties here to avoid reference loops
|
|
nsCOMPtr<nsIURI> markerURL =
|
|
GetMarkerURI(aFrame, &nsStyleSVG::mMarkerStart);
|
|
GetMarkerProperty(markerURL, aFrame, MarkerBeginProperty());
|
|
markerURL = GetMarkerURI(aFrame, &nsStyleSVG::mMarkerMid);
|
|
GetMarkerProperty(markerURL, aFrame, MarkerMiddleProperty());
|
|
markerURL = GetMarkerURI(aFrame, &nsStyleSVG::mMarkerEnd);
|
|
GetMarkerProperty(markerURL, aFrame, MarkerEndProperty());
|
|
}
|
|
}
|
|
|
|
nsSVGFilterProperty*
|
|
SVGObserverUtils::GetFilterProperty(nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame should be first continuation");
|
|
|
|
if (!aFrame->StyleEffects()->HasFilters())
|
|
return nullptr;
|
|
|
|
return aFrame->GetProperty(FilterProperty());
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::InvalidateAll()
|
|
{
|
|
if (mObservers.Count() == 0)
|
|
return;
|
|
|
|
AutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
observers.AppendElement(it.Get()->GetKey());
|
|
}
|
|
mObservers.Clear();
|
|
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->OnNonDOMMutationRenderingChange();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::InvalidateAllForReflow()
|
|
{
|
|
if (mObservers.Count() == 0)
|
|
return;
|
|
|
|
AutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
nsSVGRenderingObserver* obs = it.Get()->GetKey();
|
|
if (obs->ObservesReflow()) {
|
|
observers.AppendElement(obs);
|
|
it.Remove();
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->OnNonDOMMutationRenderingChange();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSVGRenderingObserverList::RemoveAll()
|
|
{
|
|
AutoTArray<nsSVGRenderingObserver*,10> observers;
|
|
|
|
for (auto it = mObservers.Iter(); !it.Done(); it.Next()) {
|
|
observers.AppendElement(it.Get()->GetKey());
|
|
}
|
|
mObservers.Clear();
|
|
|
|
// Our list is now cleared. We need to notify the observers we've removed,
|
|
// so they can update their state & remove themselves as mutation-observers.
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->NotifyEvictedFromRenderingObserverList();
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::AddRenderingObserver(Element* aElement,
|
|
nsSVGRenderingObserver* aObserver)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (!observerList) {
|
|
observerList = new nsSVGRenderingObserverList();
|
|
if (!observerList)
|
|
return;
|
|
aElement->SetProperty(nsGkAtoms::renderingobserverlist, observerList,
|
|
nsINode::DeleteProperty<nsSVGRenderingObserverList>);
|
|
}
|
|
aElement->SetHasRenderingObservers(true);
|
|
observerList->Add(aObserver);
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::RemoveRenderingObserver(Element* aElement,
|
|
nsSVGRenderingObserver* aObserver)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
NS_ASSERTION(observerList->Contains(aObserver),
|
|
"removing observer from an element we're not observing?");
|
|
observerList->Remove(aObserver);
|
|
if (observerList->IsEmpty()) {
|
|
aElement->SetHasRenderingObservers(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::RemoveAllRenderingObservers(Element* aElement)
|
|
{
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
observerList->RemoveAll();
|
|
aElement->SetHasRenderingObservers(false);
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::InvalidateRenderingObservers(nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(!aFrame->GetPrevContinuation(), "aFrame must be first continuation");
|
|
|
|
nsIContent* content = aFrame->GetContent();
|
|
if (!content || !content->IsElement())
|
|
return;
|
|
|
|
// If the rendering has changed, the bounds may well have changed too:
|
|
aFrame->DeleteProperty(nsSVGUtils::ObjectBoundingBoxProperty());
|
|
|
|
nsSVGRenderingObserverList *observerList =
|
|
GetObserverList(content->AsElement());
|
|
if (observerList) {
|
|
observerList->InvalidateAll();
|
|
return;
|
|
}
|
|
|
|
// Check ancestor SVG containers. The root frame cannot be of type
|
|
// eSVGContainer so we don't have to check f for null here.
|
|
for (nsIFrame *f = aFrame->GetParent();
|
|
f->IsFrameOfType(nsIFrame::eSVGContainer); f = f->GetParent()) {
|
|
if (f->GetContent()->IsElement()) {
|
|
observerList = GetObserverList(f->GetContent()->AsElement());
|
|
if (observerList) {
|
|
observerList->InvalidateAll();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::InvalidateDirectRenderingObservers(Element* aElement,
|
|
uint32_t aFlags /* = 0 */)
|
|
{
|
|
nsIFrame* frame = aElement->GetPrimaryFrame();
|
|
if (frame) {
|
|
// If the rendering has changed, the bounds may well have changed too:
|
|
frame->DeleteProperty(nsSVGUtils::ObjectBoundingBoxProperty());
|
|
}
|
|
|
|
if (aElement->HasRenderingObservers()) {
|
|
nsSVGRenderingObserverList *observerList = GetObserverList(aElement);
|
|
if (observerList) {
|
|
if (aFlags & INVALIDATE_REFLOW) {
|
|
observerList->InvalidateAllForReflow();
|
|
} else {
|
|
observerList->InvalidateAll();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGObserverUtils::InvalidateDirectRenderingObservers(nsIFrame* aFrame,
|
|
uint32_t aFlags /* = 0 */)
|
|
{
|
|
nsIContent* content = aFrame->GetContent();
|
|
if (content && content->IsElement()) {
|
|
InvalidateDirectRenderingObservers(content->AsElement(), aFlags);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetBaseURLForLocalRef(nsIContent* content, nsIURI* aDocURI)
|
|
{
|
|
MOZ_ASSERT(content);
|
|
|
|
// For a local-reference URL, resolve that fragment against the current
|
|
// document that relative URLs are resolved against.
|
|
nsCOMPtr<nsIURI> baseURI = content->OwnerDoc()->GetDocumentURI();
|
|
|
|
if (content->IsInAnonymousSubtree()) {
|
|
nsIContent* bindingParent = content->GetBindingParent();
|
|
nsCOMPtr<nsIURI> originalURI;
|
|
|
|
// content is in a shadow tree. If this URL was specified in the subtree
|
|
// referenced by the <use>(or -moz-binding) element, and that subtree came
|
|
// from a separate resource document, then we want the fragment-only URL
|
|
// to resolve to an element from the resource document. Otherwise, the
|
|
// URL was specified somewhere in the document with the <use> element, and
|
|
// we want the fragment-only URL to resolve to an element in that document.
|
|
if (bindingParent) {
|
|
if (content->IsAnonymousContentInSVGUseSubtree()) {
|
|
SVGUseElement* useElement = static_cast<SVGUseElement*>(bindingParent);
|
|
originalURI = useElement->GetSourceDocURI();
|
|
} else {
|
|
nsXBLBinding* binding = bindingParent->GetXBLBinding();
|
|
if (binding) {
|
|
originalURI = binding->GetSourceDocURI();
|
|
} else {
|
|
MOZ_ASSERT(content->IsInNativeAnonymousSubtree(),
|
|
"an non-native anonymous tree which is not from "
|
|
"an XBL binding?");
|
|
}
|
|
}
|
|
|
|
if (originalURI) {
|
|
bool isEqualsExceptRef = false;
|
|
aDocURI->EqualsExceptRef(originalURI, &isEqualsExceptRef);
|
|
if (isEqualsExceptRef) {
|
|
baseURI = originalURI;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return baseURI.forget();
|
|
}
|
|
|
|
static already_AddRefed<nsIURI>
|
|
ResolveURLUsingLocalRef(nsIFrame* aFrame, const css::URLValueData* aURL)
|
|
{
|
|
MOZ_ASSERT(aFrame);
|
|
|
|
if (!aURL) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Non-local-reference URL.
|
|
if (!aURL->IsLocalRef()) {
|
|
nsCOMPtr<nsIURI> result = aURL->GetURI();
|
|
return result.forget();
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> baseURI =
|
|
SVGObserverUtils::GetBaseURLForLocalRef(aFrame->GetContent(),
|
|
aURL->GetURI());
|
|
|
|
return aURL->ResolveLocalRef(baseURI);
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetMarkerURI(nsIFrame* aFrame,
|
|
RefPtr<css::URLValue> nsStyleSVG::* aMarker)
|
|
{
|
|
return ResolveURLUsingLocalRef(aFrame, aFrame->StyleSVG()->*aMarker);
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetClipPathURI(nsIFrame* aFrame)
|
|
{
|
|
const nsStyleSVGReset* svgResetStyle = aFrame->StyleSVGReset();
|
|
MOZ_ASSERT(svgResetStyle->mClipPath.GetType() == StyleShapeSourceType::URL);
|
|
|
|
css::URLValue* url = svgResetStyle->mClipPath.GetURL();
|
|
return ResolveURLUsingLocalRef(aFrame, url);
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetFilterURI(nsIFrame* aFrame, uint32_t aIndex)
|
|
{
|
|
const nsStyleEffects* effects = aFrame->StyleEffects();
|
|
MOZ_ASSERT(effects->mFilters.Length() > aIndex);
|
|
MOZ_ASSERT(effects->mFilters[aIndex].GetType() == NS_STYLE_FILTER_URL);
|
|
|
|
return ResolveURLUsingLocalRef(aFrame, effects->mFilters[aIndex].GetURL());
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetFilterURI(nsIFrame* aFrame, const nsStyleFilter& aFilter)
|
|
{
|
|
MOZ_ASSERT(aFrame->StyleEffects()->mFilters.Length());
|
|
MOZ_ASSERT(aFilter.GetType() == NS_STYLE_FILTER_URL);
|
|
|
|
return ResolveURLUsingLocalRef(aFrame, aFilter.GetURL());
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetPaintURI(nsIFrame* aFrame,
|
|
nsStyleSVGPaint nsStyleSVG::* aPaint)
|
|
{
|
|
const nsStyleSVG* svgStyle = aFrame->StyleSVG();
|
|
MOZ_ASSERT((svgStyle->*aPaint).Type() ==
|
|
nsStyleSVGPaintType::eStyleSVGPaintType_Server);
|
|
|
|
return ResolveURLUsingLocalRef(aFrame,
|
|
(svgStyle->*aPaint).GetPaintServer());
|
|
}
|
|
|
|
already_AddRefed<nsIURI>
|
|
SVGObserverUtils::GetMaskURI(nsIFrame* aFrame, uint32_t aIndex)
|
|
{
|
|
const nsStyleSVGReset* svgReset = aFrame->StyleSVGReset();
|
|
MOZ_ASSERT(svgReset->mMask.mLayers.Length() > aIndex);
|
|
|
|
mozilla::css::URLValueData* data =
|
|
svgReset->mMask.mLayers[aIndex].mImage.GetURLValue();
|
|
return ResolveURLUsingLocalRef(aFrame, data);
|
|
}
|